Coupling pin



March 13, 1951 o. BELKE ET AL COUPLING PIN Filed Aug. 1, 1947 mmvroRs OTIS BELKE WILLIAM PINNOW AZTORNEY.

Patented Mar. 13, 1951 orrlce 1 COUPLING PIN Otis Belke, Helenville, and William Pinnow, Rome, Wis.

Application August 1, 1947, Serial No. 765,364

1 Claim. (01. 28033.15)

Our invention relates to coupling pins and i more particularly to an implement that facilitates the coupling together of two vehicles.

The object of our invention is to provide a coupling pin that forms an integral portion of a manually operated tool.

Another object of our invention is to provide a device that has a pin equipped with a slidably mounted lifting member employed for adjusting and engaging the tongue of a farm implement or the like, to the draw bar of a tractor.

A still further object of our invention is to provide a device that may be adjusted to length, to provide ease of manipulation.

Still another object of our invention is to provide a device that may be operated with one hand, is economical and easy to manufacture, and will function perfectly for the purpose for which it is intended.

It is manifest to anyone familiar with farm implements or the like, that it is often quite laborious and inconvenient to join a trailing implement with the draw bar of the tractor, and it is imperative for the operator of the tractor to step down from the seat of the tractor to make the necessary coupling. With the device described and claimed herein, it is possible for the operator to maintain his position on the seat of the tractor while lifting the tongue of the implement into engagement with the draw bar of the tractor and placing the coupling pin in position, or reversing the operation when disengagement of the tongue from the draw bar is desired, without stepping off of the tractor.

Other and further objects of our invention will become more apparent as the description proceeds and when taken in conjunction with the drawings in which Figure l is a side view of the assembled device showing the adjustment and travel of the lifting member.

Figure 2 is a side view of the device showing the tongue of an implement being lifted from the ground for engagement with the draw bar of a truck.

Figure 3 is a fragmentary cross-sectional view of the tongue and draw bar in engagement, and the pin portion of the device inserted into position.

Figure 4 is a similar view as shown in Figure 3, with the apertures of the tongue and draw bar registering with one another and the pin ready for engagement, and

Figure 5 is a fragmentary cross-sectional view 2 r of the pin and slot arrangement of the lifting end. Similar characters of reference indicate corresponding parts throughout the several views, and referring now to the same, the character l0 shows a main bar member having a pin ll at its lower end. The main bar member Ill is preferably'constructed of square metal and is provided with a guide pin l2, and a plurality of apertures l3. These apertures extend through the member Ill and are arranged for receiving the pin M as shown in Figures 3 and 4.

The upper end of the main bar member I0 is equipped with an outwardly extending grip member l5 and a loop member l6 disposed oppositely to the grip member [5. There is an auxiliary bar member I'll also shown provided with a grip member l8 extending outward therefrom, to register with the grip member IE on the bar member Hl. This auxiliary bar member l1 passes through and is held in slidable engagement with the loop member IE on the bar member l0 and is provided with a similar loop member l9 at the forward end and encirclin the main bar member Ill.

The lifting member 29 slidably surrounds the pin member H, which is preferably of a round contour, and is held in engagement by means of the guide pin I2 which enters into engagement with a pair of longitudinal slots 2| and 21' through the cylindrical wall of the lifting member 20. The lower portion of the lifting member 28 has outwardly extending arm 22 and 22 forming an integral port-ion of the lifting member 20, and a projectin member 22" on one side of the lifting member 2a is employed for lifting a clevis or the like. This member 22" is also shown integrally formed with the lifting member 20.

In operation, the pin 14 may be inserted into any one of the apertures [3, thereby limiting slidable action of the members [0 and H. The operator manipulates the device by means of the grip portions l5 and I8, and as the lifting member 20 is downwardly disposed as shown in Figure 2, it is possible by employing the members 22 and 22', to lift the tongue 23 of an implement from the ground, and place it into proper relation with the draw bar 24 of the tractor, so that the apertures in both the tongue 23 and the draw bar 24 are in alignment with one another, at which time the pin H is inserted, as shown in Figure 3, thereby causing the lift member 22 to 1:18: raised on the pin ll of the main bar member In the chosen embodiments of our invention there are present many features not heretofore disclosed in the prior art, and although we have shown a particular and specific construction, we are fully cognizant of the fact that many changes in their form and configuration may be made without in any way effecting their operativeness and Without departing from the spirit .of our invention or the scope of our appended claim.

Having thus described our invention, what we claim and desire to secure by Letters Patent in the United States is:

A coupling pin for use between two vehicles comprising in combination a mainsbar; auiv iliary bar, said auxiliary bar slidably supportedby said main bar, means for. limiting-slidable movement of said auxiliary bar whereby said coupling may be adjusted for length, grip members extending outward from said main bar and aauiiiliary bar in alignment-with one'another; said main bar terminating into an integral pin m'em- REFERENCES CITED 'The following references are of record in the UNITED STATES PATENTS Number Name Date l 90,392 Weldon May 1, 1877 1,783,189 Green Dec. 2, 1930 2072 391 Varney Mar. 2, 1937 2,256,310 Braley at" al. Sept. 16, 1941 2,383,786 -Gish Aug.'28, 1945 

